Specialized
All Condition Armadillo Elite 700c

Details

The All Condition Armadillo Elite is the most flat-resistant tire available. Impressively though, it has performance characteristics that far exceed many competitor's race tires. We've given it a tread pattern that offers excellent all-weather traction, and newly-sourced materials for the best puncture protection possible. In terms of ride quality, our GRIPTON compound is surpassed by none. It provides low rolling resistance and the ultimate in dry and wet condition traction. Without hyperbole, it's the best flat-resistant, high-performance tire that we've ever made.

I give this tire a 5/5 for puncture protection and durability, I got only 1 flat (a drywall screw) in 7000 km which is one year of riding for me. I rotate them every 1500 km as the rear tire gets boxy from my weight (80kg) plus the 5-10kg in the panniers. I ride in temperatures (at times) over plus 30 to minus 15 degrees Celsius and the streets of Toronto are brutal on tires...riddled with debris, potholes and coarse asphalt. I've logged a total of over 70,000, km on many other so called (and expensive) "flat resistant" tires but not of them have come close to the Armadillo Elite.
Yes these tires are heavy and they definitely ride harder than all the other tires I've tried, I inflate them to the lower end of the recommendation to soften things up a bit. I do have an extra set of rims/tires that I can throw on for weekend rides. So this tire is not perfect but if you have ever had to fix a flat at minus 10, and didn't like it or can't afford to be late for work because of one, then this may be the tire for you.

I am the King of Flats. I have been riding seriously since 2010, and have counted nearly 200 flats in that time.
200. Think about that. Nearly 200 flats in about 300 weeks; sometimes 3 in one day. Sure, assume I don't know what I'm doing, if it makes you feel better about yourself. (Note: a few--not many, but a few--of these flats were due to poor patch jobs. Mah bad.) Including the time I came down with a fever and had to ride home with it, and got a flat. Which sucked.
Did I mention how much I hate flats?
I was riding (German-made $70 tire Brand redacted) because they were awesome, light enough I guess and all the cool guys (and my Bike Mentor) were riding them. But I was getting a flat a month at least, usually more than.
More than five years I did this. Because that (German Brand) was so great, right?
September 2016: I'm over it. My man at Mike's Bikes says "Try this Specialized All-Condition Armadillo Elite. Some dude did RAAM on them, not one flat. Yeah, it's heavier than (German Brand) but it's 1, cheaper and 2, it's on sale--BOGO, man, BOGO!"
What's to lose?
I'll tell you what's to lose: flats.
Since mid-September of 2016, I've ridden this set of tires on my urban commute (all paved, from suburban to industrial, in and with traffic, street signals, on bike path, ~20 miles round trip) in every condition Sacramento, California, has to offer (Note: this means no climbs worth mentioning). I ride when it's 108°, I ride when it's 22°, in rain and wind and sun and dark. Strava says it's been about 1020 miles. (Because Strava will keep track of your bike, accessories and components.)
Since then, I have had two flats.
#1, when I ran over a 1 1/2" drywall screw. That's legit, because come on, there's a freakin' limit. #2 five minutes later when I didn't replace the bead properly after repairing flat #1, and the bead came off the rim, causing a tube blowout.
Mah bad.
So these tires have resisted all but the most diabolical of road hazards, and they ride GREAT, corner well, and ok, they're not as light or zippy as my (German Brand), but then I'm not doing any criterium races on my Fast Urban Commuter bike either (and the peloton tends to look askance at work-loaded panniers anyway).
TL;DR: If you are a 700c rider and hate flats, get these tires. Pretty sure I'll be putting them on all my 700c bikes, race or not. Highest possible rating, best possible feeling, will buy again and again, even not on sale.

I have to put in my 2 cents on this. I put these tires on my Specialized Sirrus back around 2008. I had bought my Sirrus from a bike shop in England, and whatever outer tires they had originally put on it weren't very good, and so I was getting punctures regularly, like at least once a week. I put these Armadillos on, thanks to a recommendation from a friend. And from that point until mid-2015, with regular riding of probably at least 10-30km a week, I didn't have to do anything at all with my tires. No punctures, nothing. In mid-2015, the rear tire eventually started to disintegrate, so I had to order a new one for the rear wheel. The inner tube was still fine.
So what can I say? I love these tires so so much. Now I am buying some to put on a bike for my girlfriend's sister, for her Christmas present. She hates fixing punctures, and so this will be a great present for her.